Using your Remark R1 - Spec Cat Back Exhaust is easy. First, gather all the parts included in the package, which are the exhaust system, gaskets, and bolts. The exhaust is designed for direct bolt - on installation, so you can attach it to your 2008 - 2014 Subaru STI Hatchback or 2011 - 2014 Subaru WRX Hatchback without much hassle. For a better fit, we recommend using exhaust hangers. When it comes to maintenance, keep an eye on the gaskets and bolts. Check them regularly for any signs of wear or looseness and tighten or replace them as needed. Since the mid - pipe is made of 304 stainless steel and the muffler is titanium, they are quite durable, but you can still give them a wipe - down every now and then to keep them looking good. Avoid driving through deep water or harsh chemicals as much as possible to prevent damage to the exhaust system.